Calculating Precentage of Int but get exception in thread error in tMap

Calculating Precentage of Int but get exception in thread error in tMap

In my tMap I have an input flow with an integer value and I need to calculate a set percentage of it for output flow.

(row1.Integer_Numeric/100*45)

Is the calculation I have in the expression builder of a float variable but no matter what value I have for row1.Integer_Numeric I get 0 in the output flow without any compiler errors when I run the job.